00253nam a2200121   45000010006000000050017000069000010000231000032000332450014000657730028000799420007001079990017001145178920260918151421.0  a18057  aBÁTIZ VÁZQUEZ, Bernardo  aEditorial  gNúm.60 (1998) 3-4 pp.  c16  c51789d51789